Damselfly, 23 mm in 34 mm piece of amber. photo

Hajar | all galleries >> Amber Galleries >> Burmese Cretaceous Amber > Damselfly, 23 mm in 34 mm piece of amber.

Damselfly, 23 mm in 34 mm piece of amber.

Notice that dark cell in the wing, the pterostigma. "Without the pterostigma, self-exciting vibrations would set in on the wing after a certain critical speed, making gliding impossible. Tests show that with the pterostigma, the critical gliding speed is increased 10–25% on one species of dragonfly."

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